This is how non-spherical ball bearings are possible Traditional ball bearings rely on spheres for smooth, uniform motion, but certain non-spherical shapes can achieve similar functionality under the right conditions. With the help of Beau Janzen, who explains this concept through detailed visualizations, we see how equilateral shapes—such as Reuleaux triangles, rounded polygons, or specialized cam profiles—can function like rolling elements while maintaining a consistent center of rotation. Whe